Furnace.



Patented Feblb, |902.y y

T. 4V. ALLIS.

FURNACE.

Y WTNESSES.'

y. UQ

Unitario Staines Parent" Orrrcn.

THOMAS V. ALLIS, OF BRIDGEPORT, CONNnECTIOUT, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE INTERNATIONAL TIN PLATE CORPORATION, A

CORPORATION OF NEV JERSEY.

FU RNACE.

SEECEFIATIGN forming part of Letters Patent No. 693,771, dated February 18, 1902.

Application tiled July 9. 1900. Serial No. 22,918. (No model.)

To a/ZZ whom it' may concern,.-

Beitknown that I, THoMAs V. ALLIs, a citizen of the United States, and a resident of Bridgeport, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Furnaces, of which the following is a specification.

Myinvention is an improvedfurnace adapted to heat metal strips or plates in packs 1o temporarily attached to a guiding-strip,which guiding-strip is adapted to keep the said packs or plates true with the feeding-line of a rolling-mill placed adjacent to the furnace. The furnace is so constructed that the metal to be treated is charged through the side and near the front end andis moved over the furnace-floor and delivered on the opposite side and near the rear end of said furnace. The distance between the receiving and dischargzo ing openings of the furnace is sufficient to allow time to heat the packs to the proper temperature for rolling when they reach such discharge-opening, so that a continuous and uninterrupted rolling may be effected.

My invention further consists in so constructing the furnace that a portion of the guiding-strip not intended to be acted upon by the rolls is inclosed in a separate chamber, and thus isolated from the heat of the go larger chamber, adapted to receive and heat the packs of plates. In this way the guiding portion of said guiding-strip is kept comparatively cool, and consequently more rigid and thereby better adapted to the purposes of guiding.

Anotherimportant feature of inyinvention is that the rolls, which are situated close to the furnace, are parallel with the traverseline represented by the metal packs being 4o moved over the furnace-floor, or, in other words, the traverse-line of the metal packs is at right angles to the feeding-line of the rolls.

To enable others to understand my inven- 4'5 tion, reference is had to the accompanying drawings, in which- Figure l represents a cross-sectional view of the furnace through line a of Fig. 2 and broken viewof the draft-fine, also end ele- 50 vation of red uction-rolls. Fig. 2 is a longitudinal sectional View of the furnace through line b of Fig. l. Fig. 3 is a perspective detail View of the guiding-strip with a pack of three plates temporarily secured thereon, also broken perspective View of the guide adapted to be placed between the deliveryopening of the furnace and the rolling-mill. Fig. 4 is a broken perspective View, partly in section, of the furnace and perspective view of the rolling-mill in proper position with respect to thefurnace, the adjustingscrew for the rolls shown broken.

lts construction and operation are as follows:

The roof of the furnace is constructed of the several sections of brick 1 strung on the rods 2.

3 represents the floor-bricks, resting on the stools 4t, which stools are supported on the large bricks 5. Each of these bricks is provided with the pocket 6, into which pockets lead the gas-jets 7. The body or Vertical portions 7 of these jets extend down through the bricks 8, metal plate 9, and into the large longitudinal gas-pipes 10, which pipes are connected by the main pipe 11 at the rear of the furnace and leading outside of thesame, as shown more clearly at Fig. 1.

It will be observed that there is but one gas-fine 12, located at the front end of the furnace, through which the heat and flame pass from the combustion-chamber 13 into the heating-chamber 14, as indicated by the arrows in said chamber,which arrows also represent the traverse-line of the packs over the furnacefloor while the products of combustion escape through the chimney or draft-flue 14n.

15 is a guiding-strip, and on one end thereof is arranged the pack of short plates 16, 17, and 18, temporarily secured to this guidingstrip by the rivets 19.

20 is a guide between whose vertical sides 20 the guiding-strip, with its load of plates, freely passes from the furnace to the rolls. By means of this guiding -strip the short plates are delivered squarely into the bight of the rolls, and they are kept true to the feeding-line of the rolls during the rolling process, as said strip will not have left the guide 2O until after the said plates have IOC) passed through the rolls. The object of my present invention, as before described, is to construct a furnace that will properly heat the plates and not heat the said guiding-strip beyond said plates.

2l, Fig. 4, is the charging-opening in the side of the furnace and near the front end, through which the guiding-strips with their attached plates are fed into the furnace. This opening is situated just in advance of the gas-nue l2, so that the packs will be placed directly on the furnace-floor and not over said iiue.

The heating-chamber 14 has the auxiliary chamber 14b leading therefrom for the accommodation of the guiding-strips l5. This auX- iliary chamber is formed by projecting the roof-brick la down, so as to shut off the heat and ame of the heating-chamber and by so doing keep that portion of the guiding-strips not occupied by the plates comparatively cool. The bricks 22 form the floor for said strips, and they are placed on a line with the Hoor-bricks 3. y

23 is an underlying row of bricks 'supporting the bricks 22, and 24 is a cast-iron extension supporting such bricks and one row of the roof-bricks, as shown.

25 is an opening in the front end Wall 2G of the furnace to admit a pusher (not shown) for the purpose of moving the packs along the traverse-line of the furnace-floor to the exit or delivery opening 27, Fig. 2. 28, Fig.

4, is an opening on the other side of the furnace and directly opposite the said deliveryopening to admit another pusher (not shown) to deliver the packs to the reduction-rolls 29, mounted in the housings 30.

As before stated, the furnace herein shown and described is especially adapted for heating short plates mounted on a guiding-strip, and it is so constructed that by the time the first pack has reached the delivery-opening it is properly heated for rolling. In this Way a pack is entered at one end of the furnace and another pack delivered from the other end continuously.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

A furnace adapted to heat packs of plates attached to guiding-strips longer than such packs, consisting of a heating-chamber for such packs and an auxiliary chamber connected with and opening out of said packheating chamber and having a reduced vertical sectional area for the accommodation of said guiding-strips, for the purpose set forth.

Signed at Bridgeport, in the county of Fairfield and State of Connecticut, this 3d day of July, A. D. 1900.

THOMAS V. ALLS.

Witnesses:

L. R. l-Iov'r, S. G. MEEKER. 

